Pan type models have been selected for laboratory use, to prepare concrete specimens and samples. They assure the best uniformity and efficient mixing. 55-C0199/9A model is supplied complete with additional interchangeable mixing paddle, particularly suitable for low slump concrete, wheels and drawbar. 55-C0199/11 and 55-C0199/20 models can be completed with optional wheels and drawbar. See accessories. The drum type model 55-C0196/2 is more suitable for field use to prepare low-medium strength specimens.